As long as you keep breathing.

Time of Life is proportinate to outlook on life. Because time flys when your having fun :D 

As long as it takes

If you buy this magic pill I guarantee 25 additional years from time of ingestion. Also I have a marvelous bridge for sale... 

Forever actually. The universe is such that nothing ever leaves it but merely changes form. So, live it up, breathe in life, push on!

Assuming that you are Australian and not affected by factors such as warfare, poverty, dwarfism, gigantism etc the answer is 1.748 m if you are a male and 1.634 m if you are a female.

You will live a number of years more based on this formula: 21 - [Your current age].

If you are currently over 21 please report to your nearest Sleepshop.

I don't know! But live a good life and a just one, life is too short.

... till I die.

We cannot predict how long we can live, so while we still alive preserve our life and give significance.